WH

Willem G. Haanstra

📍 Westervoort, NL: #11 of 39 inventorsTop 30%
Overall (All Time): #2,185,743 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6672164 Process for determining the polymer concentration in a spinning dope solution Hendrikus J. M. Busschers, Hans Lammers 2004-01-06
6606901 Process for determining the acidity of a washing solution for fibers Hendrikus J. M. Busschers 2003-08-19